Are there any numbers that go into 78 and 780?
78 ÷ 2 = 39
780 ÷ 2 = 390
2 can be a number that goes in 78 and 780.
(3+1)y=20
4y=20
both sides divided by four
y=5
Answer:
One solution is, (3,2)
One solution is, (-1,1)
There are infinitly many solutions
The equation of the line is 
Step-by-step explanation:
Anything on the line is a solution.
The line is infinite therefore the solutions are also infinite.
The dot (3,2) and (-1,1) are both on the line therefore they are both solutions.
The slope of the line is 0.25 or 1/4 so we know the first part of the equation.
y = 1/4x
The y-intercept is on the point 1.25 or 5/4
We now know the whole equation
y = 1/4x + 5/4
To double check you can plug in points into the x and y spots on the equation or as I did graph it.
Answer:
4
Step-by-step explanation:
It's ok! This is simple. Simply plug in your given values. Since g(x) = -1, plug that into the equation.
g(x) = -x + 3
g(-1) = -(-1) + 3
=1+3
=4
Area of semi circle = π r²/2
= π 20 × 20 / 2
= 200 π
= 628 cm² (approx)